Hernández-León, Santiago; Sarmiento-Lezcano, Airam Nauzet; Couret, María; Armengol, Laia; Medina-Suárez, Ione; Fatira, Effrosyni; Tuset, Victor M; Limam, Abdallahi; Sánchez-Díez de la Lastra, Antonio; Díaz-Pérez, Javier; Landeira, José María (2024): Seasonality of zooplankton active flux in the Canary Current System during COCA I and COCA II cruises in 2002 and 2003 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.965910
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2024-06-06 • DOI registered: 2024-07-05
Abstract:
The biological carbon pump is the mechanism by which the organic matter is exported or sequestered in the deep ocean from years to millennia. This downward transport is performed through physical transport of dissolved and particulate organic carbon, the sinking of particles or passive flux, and the active transport by diel and seasonal vertical migrants. The latter mechanism is still poorly studied, and seasonality of this active flux is even less known. We studied active flux by zooplankton in two transects from the productive coastal transition zone off Northwest Africa to the warm oligotrophic ocean. We estimated the metabolic activity from the surface to 900 m depth using the enzymatic activity of the electron transfer system (ETS) as a proxy for respiration. We found zooplankton ETS activity significantly higher during spring than during fall in the mesopelagic zone. Even at similar migrant biomass values, respiratory flux was higher during spring compared to fall due to the important differences in respiration rates in the mesopelagic zone. These striking differences of respiration rates in the mesopelagic zone was mainly due to the smaller body size of zooplankton during the productive season (spring). These results should be considered in models of active carbon export in the ocean. Here, we provide the data compiled during both cruises (spring and fall).
References:
Lowry, Oliver H; Rosebrough, Nira J; Farr, A Lewis; Randall, Rose J (1951): Protein measurement with the folin phenol reagent. Journal of Biological Chemistry, 193(1), 265-275, https://doi.org/10.1016/S0021-9258(19)52451-6
Project(s):
Funding:
Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI), grant/award no. TESIS2022010116
Horizon 2020 (H2020), grant/award no. 817578: Tropical and South Atlantic climate-based marine ecosystem predictions for sustainable management
Horizon Europe (HorizonEU), grant/award no. 101090322: Impact of climate change on twilight zone fishes during early-stage development - PLEASE
Spanish Ministry of Science, Innovation and Universities (MICINN), grant/award no. BEAGAL 18/ 00172: Beatriz Galindo
Spanish Ministry of Science, Innovation and Universities (MICINN), grant/award no. PID2020-118118RB-100: DisEntangling Seasonality of Active Carbon Flux In The Ocean (DESAFIO)
Spanish Ministry of Science, Innovation and Universities (MICINN), grant/award no. REN2000 1471-CO2-O1-MAR: CarbOn flux at the Canary Atlantic region (COCA)
Coverage:
Median Latitude: 23.581579 * Median Longitude: -19.958421 * South-bound Latitude: 20.990000 * West-bound Longitude: -26.000000 * North-bound Latitude: 27.510000 * East-bound Longitude: -14.440000
Date/Time Start: 2002-09-11T00:00:00 * Date/Time End: 2003-06-07T00:00:00
Minimum DEPTH, water: 0.2 m * Maximum DEPTH, water: 920.6 m
Event(s):
COCA-1_02-4 (02) * Latitude: 27.510000 * Longitude: -14.440000 * Date/Time: 2002-09-11T00:00:00 * Campaign: COCA-1 (29HE20020910) * Basis: Hespérides * Method/Device: Plankton recorder, Longhurst-Hardy (LHPR)
COCA-1_08-4 (08) * Latitude: 26.510000 * Longitude: -16.020000 * Date/Time: 2002-09-13T00:00:00 * Campaign: COCA-1 (29HE20020910) * Basis: Hespérides * Method/Device: Plankton recorder, Longhurst-Hardy (LHPR)
COCA-1_14-4 (14) * Latitude: 26.010000 * Longitude: -18.000000 * Date/Time: 2002-09-15T00:00:00 * Campaign: COCA-1 (29HE20020910) * Basis: Hespérides * Method/Device: Plankton recorder, Longhurst-Hardy (LHPR)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Hernández-León, Santiago | |||
| 2 | Date/Time of event | Date/Time | Hernández-León, Santiago | |||
| 3 | Latitude of event | Latitude | Hernández-León, Santiago | |||
| 4 | Longitude of event | Longitude | Hernández-León, Santiago | |||
| 5 | Optional event label | Event 2 | Hernández-León, Santiago | |||
| 6 | DEPTH, water | Depth water | m | Hernández-León, Santiago | Geocode | |
| 7 | Time of day | Time of day | Hernández-León, Santiago | |||
| 8 | Zooplankton, biomass as protein | Zoopl prot | mg/m3 | Hernández-León, Santiago | Spectrophotometry according to Lowry et al. (1951) [modified after Rutter (1967)] | |
| 9 | Electron transport system activity of oxygen per mass | ETS mass | µl/mg/h | Hernández-León, Santiago | Tetrazolium reduction technique according to Packard (1971) | per protein |
| 10 | Zooplankton | Zoopl | #/m3 | Hernández-León, Santiago | Optical plankton counter, Focal Technologies Inc., OPC-1L (OPC) | |
| 11 | Zooplankton, biomass as protein per individual | Zoopl prot/ind | µg/# | Hernández-León, Santiago | Calculated | Protein biomass of samples divided by the number of particles detected by the OPC. |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 4 (ProcLevel4)
Size:
6153 data points
Download Data
View dataset as HTML (shows only first 2000 rows)